Cleared Traditional

K941864 - MRT-150A, MRT-150A SOFTWARE VERSION 11.9 (FDA 510(k) Clearance)

Class II Radiology device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K941864 · Toshiba America Mri, Inc. · Radiology device
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Jan 1995
Decision
283d
Days
Class 2
Risk

K941864 is an FDA 510(k) clearance for the MRT-150A, MRT-150A SOFTWARE VERSION 11.9. Classified as System, Nuclear Magnetic Resonance Imaging (product code LNH), Class II - Special Controls.

Submitted by Toshiba America Mri, Inc. (S. San Francisco, US). The FDA issued a Cleared decision on January 26, 1995 after a review of 283 days - an extended review cycle.

This device falls under the Radiology FDA review panel, regulated under 21 CFR 892.1000 - the FDA radiology and imaging software oversight framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Radiology review framework, consistent with the majority of Class II 510(k) submissions.

View all Toshiba America Mri, Inc. devices

Submission Details

510(k) Number K941864 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received April 18, 1994
Decision Date January 26, 1995
Days to Decision 283 days
Submission Type Traditional
Review Panel Radiology (RA)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
176d slower than avg
Panel avg: 107d · This submission: 283d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code LNH System, Nuclear Magnetic Resonance Imaging
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 892.1000
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Radiology devices follow this clearance model.

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